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Keith Nissen Master Services Team Photo

Keith Nissen

Owner & Veteran

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Keith Nissen Master Services Team Photo

Keith Nissen

Owner & Veteran

Keith is our leader and owner of Master Services. For over 30 years this dedicated Veteran and Master Plumber has serviced the Lake Geneva area offering 100% guarantees that no other company in the area offers. Keith is proud of his team and strives to provide his customers with the very best trained technicians and customer service available in the industry. Keith is also our Master Plumber and holds and HVAC Expert license. He loves to fly and also loves to spend time with his wife Mary, mom Toni, and his favorite dogs Dudley and Presley.

Mary Nissen Master Services Team Photo

Mary Nissen

CEO & Owner

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Mary Nissen Master Services Team Photo

Mary Nissen

CEO & Owner

Mary has over 30 years of leadership and Operations experience. She has a proven track record in management and leading teams to success while improving and exceeding customer expectations. Mary is one of the owners of Master Services and CEO and Mary also owns her own company Master SOULutions that offers Success Consulting for businesses and personal Life Coaching for individuals for transformation and achieving goals and dreams. Mary has performed many roles in management in Master Services and looks forward to more involvement in the community and growing services to offer our customers that add value and solutions that work! Mary values family time the most and her most precious role is that of grandmother to her two beautiful granddaughters and loving wife and mother.

Betty Kroll Master Services Team Photo

Betty Kroll

Accounting Specialist

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Betty Kroll Master Services Team Photo

Betty Kroll

Accounting Specialist

Eric Nowak Master Services Team Photo

Eric Nowak

Lead Plumbing Technician

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Eric Nowak Master Services Team Photo

Eric Nowak

Lead Plumbing Technician

Eric is a highly skilled and trained technician in plumbing and HVAC. He has over 10 years experience in customer service and leadership. He is a dedicated father and loves fishing and football. He loves to make customers happy and exceed customer expectations. Eric is trained in first aide and CPR certified. Eric is also certified in IAQ.

Dan Wenger Master Services Team Photo

Dan Wenger

Plumbing Technician

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Dan Wenger Master Services Team Photo

Dan Wenger

Plumbing Technician

Dan is a trained and highly professional plumbing technician with years in the service industry. Dan is certified in first aid and CPR. Dan has a lovely wife and two girls. He looks forward to his family time and rest.

George Schutte Master Services Team Photo

George Schutte

Lead HVAC Technician & Safety Captain

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George Schutte Master Services Team Photo

George Schutte

Lead HVAC Technician & Safety Captain

George is a highly trained and skilled technician. He is our safety coordinator and trained in first aid and CPR. George is a team and customer hero who recently saved the life of one of our customers in Home Depot. He is a loving husband and loves to make people smile. George is our wiring expert and is also trained on IAQ.

Jack Schweder Master Services Team Photo

Jack Schweder

Senior HVAC Technician & Comfort Advisor

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Jack Schweder Master Services Team Photo

Jack Schweder

Senior HVAC Technician & Comfort Advisor

Jack is a highly trained HVAC technician and a comfort advisor. He is trained in IAQ and is also certified in first aid and CPR. He is a loving father to a beautiful little girl name Peyton and when he is not working you will find him fishing on the water with his brother Brian.

DeVonte Miller Master Services Team Photo

DeVonte Miller

HVAC Technician

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DeVonte Miller Master Services Team Photo

DeVonte Miller

HVAC Technician

Tim Willis Master Services Team Photo

Tim Willis

Lead Installer

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Tim Willis Master Services Team Photo

Tim Willis

Lead Installer

Tim is Master Services Lead HVAC Installer. He was a all-conference running back and middle linebacker. He is married and a father of two beautiful girls. Tim is looking forward to becoming a master of his trade.

2020_01_Darryl Lonzaga_Team Photo

Darryl Lonzaga

Install Technician

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2020_01_Darryl Lonzaga_Team Photo

Darryl Lonzaga

Install Technician

Bridgette Kramer Master Services Team Photo

Bridgette Kramer

Purchasing & Warehouse Coordinator

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Bridgette Kramer Master Services Team Photo

Bridgette Kramer

Purchasing & Warehouse Coordinator

Bridgette is our Purchasing and Warehouse Coordinator. Bridgette has over 10 years experience in a purchasing role. Bridgette has two beautiful daughters and has a goal of a beautiful home in the near future. Bridgette does an awesome job ordering everything from equipment to office supplies to gifts for vendor shows. Bridgette your awesome and we appreciate you!

Katie Smosarski Master Services Team Photo

Katie Smosarski

Sales Lead Coordinator

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Katie Smosarski Master Services Team Photo

Katie Smosarski

Sales Lead Coordinator

Katie has been in customer services over 25 years. Katie’s smile and laugh are contagious and our customers love her. Her greatest accomplishments are her 3 lovely girls and her finance Eric. Katie is a great planner and leads many projects in the office. Katie assists with most administrative tasks and leads the call center in results. Way to go Katie!

Dudley Nissen Master Services Team Photo

Dudley

King of Comfort

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Dudley Nissen Master Services Team Photo

Dudley

King of Comfort

Dudley is the new King of Comfort. He quickly won over our customers and loves the be petted. Dudley comes to work every day and puts a smile on all the faces at the office and our customers who visit us. Dudley is also a service dog and loves to go to vendor shows, fairs and special occasions. He loves his treat and is always willing to play fetch.